Sound generator unit



FIG. 1 is a perspective view of a sound generator unit;

FIG. 2 is a front elevational view;

FIG. 3 is a top view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a bottom view.

The ornamental design for a sound generator unit, as shown anddescribed.